JP2006044944A - Piezoelectrically driven part feeder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a piezoelectrically driven part feeder suitable for carrying and sorting small carried workpieces, while providing continuous delicate vibration, easily changing an inclination angle and the inclining direction of the angle. <P>SOLUTION: This piezoelectrically driven part feeder has a vibration member assembly for vibrating a top plate for transmitting vibration to the carrying work. This vibration member assembly has a piezoelectric element vertically erected from the top plate, a top spring installing member installed on one end of this piezoelectric element, and a top spring horizontally installed in the piezoelectric element at a predetermined angle via this top spring installing member. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a piezoelectric drive type part feeder, and more particularly to a piezoelectric drive type part feeder provided with a top spring mounting member for attaching a top spring by providing a predetermined angle to a piezoelectric element.

  In general, a piezoelectric drive type part feeder employs a bimorph having piezoelectric elements attached to both side surfaces of an elastic plate such as a leaf spring as a vibrating body for assembling a vibration member that generates vibration. When an AC low voltage is applied by a step-up transformer so that the polarization direction is opposite to the piezoelectric elements on both sides of this bimorph, one piezoelectric element expands in the positive half cycle, the other piezoelectric element contracts, and the negative half By repeating the expansion and contraction movement such that one piezoelectric element contracts and the other piezoelectric element expands in a cycle, the bimorph is excited to bend and vibrate. As a result, the chute connected to the bimorph is vibrated obliquely in the up-down direction, and the workpieces conveyed on the chute are sequentially conveyed (for example, Patent Document 1).

  However, the piezoelectric drive type part feeder described in Patent Document 1 is not always used by being attached to the top plate in a balanced state by causing the chute (conveyance body) to protrude forward and backward by an appropriate length. If it is mounted so as to protrude in the front-rear direction, there is a possibility that the conveyance of the conveyance work is stopped or the reverse operation is caused. In such a case, it is possible to improve the running of the transport work by changing one or both of the inclination angles at the front and rear portions of the top plate relative to the base plate and changing the inclination angle to increase or decrease. ing.

  However, in the case of the rectilinear vibration part feeder described in Patent Document 1, since the top spring (elastic material coupler) and the mounting location of the piezoelectric element are integrated, the change of the inclination angle and the transfer work Changing the inclination direction of the above-mentioned angle for changing the running direction is not easy because the base (mounting base) must be replaced or a mounting member must be added.

  Therefore, for this improvement, a linear vibration part feeder as described in Patent Document 2 has been proposed. In the linear vibration parts feeder described in Patent Document 2, a top spring that supports a top plate is suspended in a substantially vertical manner and connected to a lower side of the top spring (upper leaf spring) from a base plate. By connecting the raised piezoelectric elements and making the interval of the connecting part adjustable by changing the thickness of the spacer, the interval of the connecting part of the front and rear is changed widely, and the interval is variably adjusted, Change the inclination angle of the front side and the rear side, change the inclination direction of the apparent angle, and reverse the attachment of the top spring and piezoelectric element to the above case The running direction of the workpiece is changed.

However, since the rectilinear vibration part feeder of Patent Document 2 creates an apparent angle with a spacer interposed between the top spring and the piezoelectric element, when the piezoelectric element is vibrated, as shown in FIG. As shown in FIG. 11, a large upward vibration is generated in the top spring with the fulcrum as the fulcrum, so that continuous fine vibration cannot be obtained, and this only affects the conveyance of the workpiece. In addition, the sorting of small transported workpieces may be hindered and requires improvement.
JP-A-62-218308 Japanese Patent No. 2897894

  The present invention has been made in consideration of the above-described circumstances, and it is easy to change the inclination angle and change the inclination direction of the angle, and can obtain a continuous fine vibration, which is suitable for the conveyance and selection of a small conveyance work. An object is to provide a drive-type parts feeder.

  In order to achieve the above-described object, a piezoelectric drive type part feeder according to the present invention includes a top plate that transmits vibration to a work to be conveyed, a vibration member assembly that vibrates the top plate and includes a piezoelectric element, and the vibration member assembly includes: In the piezoelectric drive type part feeder having a base plate to be attached, the vibration member assembly includes a piezoelectric element vertically installed from the base plate, a top spring attaching member attached to one end of the piezoelectric element, and the top spring. It has a top spring attached to the piezoelectric element through a mounting member at a predetermined angle with respect to the horizontal.

  Preferably, the top spring mounting member includes a top spring that forms a predetermined angle with respect to the horizontal, and a top spring that is inclined oppositely to the vertical with respect to the top spring and forms a predetermined angle with respect to the horizontal. Are attached, and the work to be conveyed is conveyed in the opposite direction via the top plate attached to each of the top springs.

  Preferably, the top spring mounting member includes a vertical piezoelectric element mounting surface to which the piezoelectric element is mounted and a top spring mounting surface to which the top spring is mounted and inclined at a predetermined angle with respect to the horizontal. Is provided.

  Preferably, the top spring mounting member includes a vertical piezoelectric element mounting surface on which the piezoelectric element is mounted, a first top spring mounting surface inclined at a predetermined angle with respect to the horizontal, A second top spring mounting surface is provided that is inclined opposite to the first top spring mounting surface and perpendicular to the horizontal and has a predetermined angle with respect to the horizontal.

  Preferably, the inclination angle of the first top spring attachment surface is different from the inclination angle of the second top spring attachment surface.

  Preferably, one piezoelectric element is attached to a support member to which the piezoelectric element is attached.

  In addition, the piezoelectric drive type parts feeder according to the present invention includes a top plate that transmits vibration to the work to be conveyed, a vibration member assembly that vibrates the top plate and includes a piezoelectric element, and a base plate to which the vibration member assembly is attached. In the piezoelectric drive type part feeder, the vibration member assembly includes a piezoelectric element standing upright from the base plate at a predetermined angle with respect to the horizontal, a top spring mounting member attached to one end of the piezoelectric element, A first top spring mounted on the piezoelectric element at the same angle as the piezoelectric element using a top spring mounting member, and opposite to the first top spring perpendicular to the first top spring via the top spring mounting member And a second top spring inclined at a predetermined angle with respect to the horizontal. Characterized by each conveying in the opposite direction to transport the workpiece through the top plate attached to each of the al first and second top spring.

  Preferably, the top spring mounting member is mounted with the piezoelectric element and the first top spring, and a first top spring mounting surface inclined at a predetermined angle with respect to the horizontal in the mounted state; A second top spring mounting surface is provided that is inclined opposite to the first top spring mounting surface with respect to the vertical and inclined at a predetermined angle with respect to the horizontal.

  Preferably, the piezoelectric element and the first top spring are screwed to the first top spring mounting surface by joint fastening.

  According to the piezoelectric drive type parts feeder according to the present invention, it is easy to change the inclination angle and change the inclination direction of the angle, and a continuous fine vibration can be obtained, which is suitable for the transfer and selection of a small transfer work. A parts feeder can be provided.

  Hereinafter, a piezoelectric drive type part feeder according to a first embodiment of the present invention will be described with reference to the accompanying drawings.

  FIG. 1 is a perspective view of a piezoelectric drive type parts feeder according to a first embodiment of the present invention.

  As shown in FIG. 1, the piezoelectric drive type parts feeder 1 according to the first embodiment supports a chute 2 provided with a conveyance groove 2 a by vibrating a conveyance work placed thereon and supporting the chute 2. Then, a top plate 3 that transmits vibration to the conveyed work via the chute 2, a pair of vibration member assemblies 5 having the same shape having the piezoelectric elements 4 by vibrating the top plate 3, and the vibration member assembly 5 are attached to the top plate 3. The base plate 6 is provided.

  As shown in FIGS. 1 and 2, the vibrating member assembly 5 is attached to the piezoelectric element 4 standing upright from the base plate 6 provided with the fixing through hole 6 a and one end of the piezoelectric element 4. A top spring mounting member 7 and a top spring 8 mounted at a predetermined angle θ with respect to the horizontal via the top spring mounting member 7 are provided. The piezoelectric element 4 is attached to both surfaces of a steel plate strip-shaped support member 4a and covered with a resin cover 4b.

As shown in FIG. 3, the top spring mounting member 7 includes a vertical piezoelectric element mounting surface 7a to which the piezoelectric element 4 is mounted, a mounting screw hole 7a ₁ for the mounting, a top spring 8 and a predetermined angle. A top spring mounting surface 7b having a mounting surface and a mounting screw hole 7b ₁ for the mounting are provided.

Assembling of the vibration member assembly 5, that is, attaching the top spring 8 to the piezoelectric element 4 is performed by aligning the support member 4a of the piezoelectric element 4 with the piezoelectric element attachment surface 7a and then drilling it at the upper end of the support member 4a. A screw 4a ₂ passing through the upper mounting hole 4a ₁ is screwed into a mounting screw hole 7a ₁ for mounting the top spring mounting member 7 to the piezoelectric element 4, and the top spring 8 has a top spring mounting surface having a predetermined angle. after bonding to 7b, screwing the screws 7a ₂ passing through the lower attachment hole 8a ₁ bored in the lower end of the top spring 8 into the mounting screw hole 7b _1. Thereby, the top spring 8 is attached to the piezoelectric element 4 at a predetermined angle with respect to the horizontal. In addition, although the said vibration member assembly was comprised with a pair of the same shape, it does not necessarily need to be the same shape, for example, the angle | corner made with respect to horizontal may differ.

  Since the piezoelectric drive type part feeder of the first embodiment can be used to transport various transport workpieces, it is necessary to change the force acting on the transport workpiece and the transport speed depending on the type of the transport workpiece. In this case, in addition to changing the voltage applied to the piezoelectric element, the top spring mounting member can be attached to the top spring mounting member by selecting a top spring mounting member having a predetermined angle from those having different inclinations of the top spring mounting surface of the top spring mounting member. The top spring can be attached with a predetermined angle. Thereby, the angle of a top spring can be easily changed by changing a top spring attachment member.

  In addition, by attaching the top spring mounting member from one surface of the piezoelectric element to the other surface opposite thereto, the inclination of the top spring can be inclined opposite to the vertical, so that the vibration member assembly is A large force in the opposite direction can be generated by the chute and the top plate, and the transfer work can be transferred in the opposite direction. Thereby, a conveyance direction can be easily changed only by changing the attachment direction to a top spring attachment member.

As shown in FIGS. 1 and 2, the vibration member assembly 5 assembled as described above includes a base plate 6 by means of a mounting screw 4b ₁ penetrating through a lower mounting hole 4b formed in the lower end portion of the support member 4a. The top plate 3 is screwed to the vibration member assembly 5, and the chute 2 is screwed to the top plate 3.

  Next, the operation of the piezoelectric drive type part feeder of the first embodiment will be described.

  As shown in FIG. 1, the piezoelectric drive type parts feeder 1 of the first embodiment is directly installed on an appropriate base or indirectly installed through an appropriate buffer member, and then the front and rear of the base plate 6 A fixing bolt is screwed into a screw hole drilled in the gantry from the fixing through-hole 6a provided on the base and fixed.

Thereafter, when an AC voltage is applied to the piezoelectric element 4, vibration is applied to the top plate 3 via the top spring 8, and the chute 2 attached to the top plate 3 shown in FIG. 4, and the top piezoelectric element 4 is pushed forward. At the same time, the top piezoelectric element 4 of the lower part is pushed forward through the top spring mounting member 7. . That is, as a fulcrum position of the axis of the fixing bolt 4b ₁ at the lower end of the piezoelectric element 4 fixed to the base plate 6, to move the entire upper vibrates forward position as shown by the dotted line state shown in FIG. 4 As a result, the chute 2 moves to the upper front part. Further, when the chute 2 is moved rearward from the solid line state of FIG. 4, contrary to the above, as a fulcrum position of the axis of the fixing bolt 4b ₁ at the lower end of the piezoelectric element 4 vibrates the entire upper rearward It moves to the state shown by the one-dot chain line in FIG. 4, and as a result, the chute 2 moves to the lower rear part.

  As described above, when the chute 2 that vibrates and conveys the conveyed workpiece repeats the operation from the lower rear to the upper front and further to the lower rear, the conveyed workpiece is successively supplied to the conveying groove 2a of the chute 2 accordingly. However, they are gradually aligned, shaped and conveyed toward the front.

  At this time, the top spring supporting the top plate is attached to the front side and the rear side of the base plate at a predetermined inclination angle θ, so that the height of the top spring is reduced by deformation of the piezoelectric element. By moving the top plate toward the lower rear part, the chute attached to the top plate moves from the lower rear part to the upper front part, and further to the rear upper part. By repeating, the workpiece is vibrated and conveyed in the direction of the arrow.

  In the transport process as described above, the top spring has a predetermined inclination angle θ, so that the top plate can be vibrated in the horizontal direction, the transport work can be transported, and the top spring mounting member 7 can be transported. Since the top spring 8 is coupled to the piezoelectric element 4 in a continuous state with a predetermined inclination angle θ, the top spring is horizontally moved using a spacer as in the conventional example shown in FIG. The top spring mounting member 7 is used as a fulcrum, unlike the structure that causes the top spring to vibrate up and down as shown in FIG. There is no vertical vibration of the top spring, and the amplitude in the upward direction is suppressed as shown in FIG. 9, and continuous fine vibration is obtained.

  As described above, according to the piezoelectric drive type part feeder of the first embodiment, there is no vertical vibration of the top spring, continuous fine vibration is obtained, and it is suitable for transporting small transport work such as electronic parts, The sorting can be performed with high accuracy. In addition, by changing the top spring mounting surface to a different top spring mounting member, the angle of the top spring can be easily changed, and the transport direction can be easily changed by simply changing the mounting direction of the top spring mounting member. Can be changed.

  In addition, a second embodiment of the piezoelectric drive type part feeder according to the present invention will be described.

  The first embodiment is provided with one top spring and a top plate, whereas the second embodiment is provided with two top springs and a top plate that are inclined in opposite directions with respect to the vertical. Can be conveyed in opposite directions.

  For example, as shown in FIGS. 5 and 6, the piezoelectric drive type parts feeder 1 according to the second embodiment includes two chutes 2 </ b> A and 2 </ b> B and two sets of top springs that are inclined in the opposite directions with respect to the vertical. 8A, 8B, two top plates 3A, 3B, the top plates 3A, 3B are vibrated, and two pairs of vibration member assemblies 5 having piezoelectric elements 4 and a base plate 6 are provided.

The vibration member assembly 5 is provided with a top spring mounting member 7 as shown in FIG. 7. The top spring mounting member 7 has a vertical piezoelectric element mounting surface 7a on which the piezoelectric element 4 is mounted, and for this mounting. Mounting holes 7a ₁ , a top spring mounting surface 7b to which the first top spring 7A ₁ is mounted and having a predetermined angle θ ₁ , a mounting hole 7b ₁ for this mounting, and a second top spring 7A ₂ a top spring mount surface 7c having mounted predetermined angle theta _2, the mounting hole 7c ₁ for this attachment are provided.

In the second embodiment, the vibration member assembled top spring 7A of 5, among 7B, the top spring _7A 1, 7B ₁ angle theta ₁ of the first (conveying direction of the conveying work) second (counter-conveying direction) compared to the angle theta ₂ of the top spring 7A ₂ is set small. By using the top spring attachment member 7, so as to be inclined to each opposite two of the top spring 7A, and 7B to the vertical, and the top spring _7A 1, 7B ₁ angle theta ₁ and the top spring _7A 2, The angle θ _{2 of} 7B ₂ can be attached to the piezoelectric element 4 so as to be different. In addition, since another structure is not different from the piezoelectric drive part feeder shown in FIG. 1, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  According to the piezoelectric drive type part feeder according to the second embodiment, continuous fine vibration can be obtained, the angle of the top spring can be easily changed, and in addition, the conveyance direction can be easily changed. It is possible to easily realize a piezoelectric drive type part feeder capable of transporting each in the opposite direction.

  In addition, a third embodiment of the piezoelectric drive type part feeder according to the present invention will be described.

  In the first embodiment, two piezoelectric elements are attached to the support member, whereas in the third embodiment, one piezoelectric element is attached to the support member.

  For example, as shown in FIG. 8, the piezoelectric drive part feeder 1 according to the third embodiment is provided with one vibration member assembly 5, and this vibration member assembly 5 is perpendicular to the block-shaped base plate 6. One piezoelectric element 4 attached to the standing support member 4a, a top spring attachment member 7 attached to one end of the piezoelectric element 4, and a predetermined level with respect to the horizontal via the top spring attachment member 7 The top spring 8a on one side is attached at an angle θ. Further, the other top spring 8b having the same shape and the same angle as the other one top spring 8a is directly attached to the base plate 6. Thereby, since only one expensive piezoelectric element is used, it is inexpensive.

  Further, a fourth embodiment of the piezoelectric drive type part feeder according to the present invention will be described.

  In the second embodiment, two top springs that are inclined in the opposite direction are attached to the vertically arranged piezoelectric element, whereas in the fourth embodiment, the inclined piezoelectric element is installed. A top spring having the same inclination as the piezoelectric element and two top springs inclined in the opposite direction to the top spring are provided.

  For example, as shown in FIG. 13, the piezoelectric drive type parts feeder 1 according to the fourth embodiment is provided with two chutes 2A and 2B having different conveying surfaces 2Aa and 2Bb, and the chutes 2A and 2B. The top plates 3A and 3B, two sets of vibration member assemblies 5 that vibrate the top plates 3A and 3B, and a base plate 6 are provided.

As shown in FIG. 14, the vibration member assembly 5 includes the piezoelectric element 4 erected from the base plate 6 at a predetermined angle θ ₃ with respect to the horizontal, and a top spring attached to one end of the piezoelectric element 4. A mounting member 7, a first top spring 8 </ b> A (the transport direction of the transport workpiece) mounted on the piezoelectric element 4 at the same angle θ ₃ as the piezoelectric element 4 using the top spring mounting member 7, and the top spring and a top spring 8B of the second (counter-conveying direction) a predetermined angle theta ₄ with respect to the inclined and horizontal counter to the first top springs 8A and vertically through the mounting member 7 . Here, the angle θ ₃ and the angle θ ₄ are preferably substantially the same.

As shown in FIGS. 15 and 16, the piezoelectric element 4 has an angle θ ₃ as shown in FIG. 13 using an element mounting seat 6b provided with an inclined mounting surface 6b ₁ having an angle θ _3. Established. By using the element mounting seat 6b, the inclination angle theta ₃ of the piezoelectric element 4 can be easily realized.

As shown in FIGS. 17 and 18, the top spring mounting member 7 has the piezoelectric element 4 and the first top spring 8 </ b> A attached thereto. When the top spring mounting member 7 is attached, the top spring mounting member 7 has a predetermined angle with respect to the horizontal. theta ₃ and the first top spring attachment surface 7a which is inclined, the first inclined counter to the top spring attachment surface 7a perpendicular and second top spring mount to a predetermined angle theta ₄ inclined with respect to the horizontal A surface 7b is provided. Since the top spring mounting member is relatively simple in shape, even if two top springs with different inclinations can be mounted, it can be shared as the top spring mounting member of the vibration member assembly on the front side and the rear side, Furthermore, the conveyance direction of both chutes can be changed by reversing and attaching the top spring attachment member.

Furthermore, as shown in FIG. 19, the first top springs 8A is a substantially L-shaped in flat plate, the top plate mounting hole 8A ₁ is provided one for Tatsuhen side, top laterally side spring mounting member mounting hole 8A ₂ is provided. Since the first top spring 8A is substantially L-shaped, it can be used for the second top spring 8B by being reversed and screwed to the top spring mounting member 7, thereby reducing the number of parts.

Further, as shown in FIG. 14, the piezoelectric element 4 and the first top spring 8A are preferably attached to the top spring attachment member 7 by using a screw 4a ₂ and tightening the first top spring attachment surface 7a. Screwed on. As a result, the screw can be saved and the work efficiency can be improved. At this time, the spacer 4a ₃ is interposed between the piezoelectric element 4 and the first top spring 8A, but the spacer 4a ₃ does not vibrate up and down with the spacer 4a ₃ as a fulcrum. ₃ is preferably made as thin as possible.

  Next, the operation of the piezoelectric drive type part feeder of the fourth embodiment will be described.

  As shown in FIG. 13, when an AC voltage is applied to the piezoelectric element 4 of the piezoelectric drive type part feeder 1 according to the fourth embodiment, the top plate 3 </ b> A via the first (conveying direction of the conveying work) top spring 8 </ b> A. The conveyance side chute 2A attached to the top plate 3A pushes the top spring 8A forward, and at the same time, the lower piezoelectric element 4 also has the intermediate top spring 8A via the attachment member 7. Its upper part is pushed forward.

That is, with the position on the axis of the fixing bolt 4b ₁ at the lower end of the piezoelectric element 4 fixed to the base plate 6 as a fulcrum, the entire upper part vibrates and moves forward, and the chute 2A moves forward and upward. Become.

Further, when the chute 2A is moved from this state to the rear, contrary to the above, as a fulcrum position of the axis of the fixing bolt 4b ₁ at the lower end of the piezoelectric element 4, it moves the entire upper vibrates rearwardly As a result, the chute 2A moves to the lower rear part.

  As described above, when the chute 2A that vibrates and conveys the conveyed workpiece repeats the operation from the lower rear portion to the upper front portion and further to the lower rear portion, the conveying workpiece supplied one after another to the chute 2A gradually increases. Aligned, shaped and conveyed toward the front.

In this case, the piezoelectric elements 4 and the top spring 8A are both inclined at a predetermined angle theta _3, since substantially the top spring 8A is in a state of being stretched from the piezoelectric element 4, the upward direction as shown in FIG. 9 Is suppressed, continuous fine vibration can be obtained, fine vibration can be given to the chute 2A, and even if the work is small and light, it can be conveyed in an orderly and stable manner. .

  On the other hand, the second (anti-conveying direction) top spring 8B is attached in an inclined state to the piezo-electric element 4 that is inclined and installed via the top spring attachment member 7, so that the anti-conveying side chute 2B is more A large vibration is obtained, a larger vibration can be given to the anti-conveyance side chute 2B, and the conveyed work can be conveyed at a higher speed.

  Therefore, for example, when the piezoelectric drive type part feeder 1 according to the fourth embodiment is incorporated in an inspection apparatus or the like, even if the work piece is a small and light electronic component, reliable conveyance and inspection can be performed. If it is rejected and transferred to the non-conveying side chute 2, defective electronic components can be quickly recovered.

  In each of the above-described embodiments, the piezoelectric drive type part feeder that uses a linear chute to feed the conveyance work in a straight line has been described as an example. However, the piezoelectric drive type part feeder according to the present invention is arranged on the circumference. The same effect can be obtained even with a piezoelectric drive bowl parts feeder in which a ring-shaped chute is attached to a plurality of vibration member assemblies.

  Using the piezoelectric drive type part feeder according to the present invention as shown in FIG. 1, the voltage applied to the piezoelectric element was changed, the amplitude generated in the chute was measured, and the horizontal and vertical amplitudes were obtained (implementation) Example). Moreover, the test was similarly performed using the conventional piezoelectric drive type part feeder as shown to patent document 2. FIG.

  Results: Shown in FIG. 9, FIG. 10 and FIG.

  As shown in FIGS. 9A to 9C and FIG. 10, in the example, the horizontal amplitude increases in proportion to the change in the applied voltage, the vertical amplitude is substantially constant, and the horizontal amplitude is the same. The value was as low as about 15%, and it was found that there was no vertical vibration and continuous fine vibration was obtained.

  In contrast, as shown in FIGS. 11A to 11C and FIG. 10, in the conventional example, the horizontal amplitude increases in proportion to the change of the applied voltage, but when the applied voltage exceeds 100V. For the increase, the amplitude does not increase, and the vertical amplitude is substantially the same as the horizontal amplitude, and when the applied voltage exceeds 125 V, the vertical amplitude becomes the horizontal amplitude. It was found that the vibrations were significantly higher and the vertical vibrations became remarkable, and continuous fine vibrations could not be obtained.

  Although the present invention has been described with the linearly driven piezoelectric drive type parts feeder, it goes without saying that the same effect can be obtained even with a piezoelectric drive type bowl parts feeder.

The perspective view of the piezoelectric drive part feeder which concerns on 1st Embodiment of this invention. The side view of the vibration member assembly used for the piezoelectric drive type parts feeder which concerns on 1st Embodiment of this invention. The perspective view of the top spring attachment member used for the piezoelectric drive type parts feeder which concerns on 1st Embodiment of this invention. The conceptual diagram which shows the operation state of the piezoelectric drive part feeder which concerns on 1st Embodiment of this invention. The perspective view of the piezoelectric drive type parts feeder which concerns on 2nd Embodiment of this invention. The side view of the piezoelectric drive type parts feeder which concerns on 2nd Embodiment of this invention. The perspective view of the top spring attachment member used for the piezoelectric drive type parts feeder which concerns on 2nd Embodiment of this invention. The side view of the top spring attachment member used for the piezoelectric drive type parts feeder which concerns on 3rd Embodiment of this invention. The result figure of the amplitude test using the piezoelectric drive type part feeder which concerns on 1st Embodiment of this invention. FIG. 5 is a diagram showing the results of an amplitude test using the first embodiment of the present invention and a conventional piezoelectric driven part feeder. FIG. 6 is a diagram showing the results of an amplitude test using a conventional piezoelectric drive type part feeder. Explanatory drawing of the operation state of the conventional piezoelectric drive type parts feeder. The side view of the piezoelectric drive part feeder which concerns on 4th Embodiment of this invention. The side view of the vibration member assembly used for the piezoelectric drive part feeder which concerns on 4th Embodiment of this invention. The top view of the element attachment seat used for the piezoelectric drive type parts feeder which concerns on 4th Embodiment of this invention. The side view of the element attachment seat used for the piezoelectric drive type parts feeder which concerns on 4th Embodiment of this invention. The side view of the top spring attachment member used for the piezoelectric drive type parts feeder which concerns on 4th Embodiment of this invention. The top view of the top spring attachment member used for the piezoelectric drive type parts feeder which concerns on 4th Embodiment of this invention. The top view of the top spring used for the piezoelectric drive type parts feeder which concerns on 4th Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Piezoelectric drive type part feeder 2 Chute 2a Conveying groove 3 Top plate 4 Piezoelectric element 5 Vibration member assembly 6 Base plate 7 Top spring mounting member 7a Piezoelectric element mounting surface 7b Top spring mounting surface 8 Top spring

Claims (9)

In a piezoelectric drive type parts feeder comprising a top plate that transmits vibration to a transport work, a vibration member assembly that vibrates the top plate and includes a piezoelectric element, and a base plate to which the vibration member assembly is attached, the vibration member assembly includes: A piezoelectric element erected vertically from the base plate, a top spring mounting member attached to one end of the piezoelectric element, and the piezoelectric element at a predetermined angle with respect to the horizontal via the top spring mounting member. A piezoelectrically driven parts feeder having a top spring attached thereto. The top spring mounting member is mounted with a top spring that makes a predetermined angle with respect to the horizontal, and a top spring that is inclined opposite to the top spring and that makes a predetermined angle with respect to the horizontal. 2. The piezoelectric drive type parts feeder according to claim 1, wherein the workpiece is conveyed in the opposite direction via the top plate attached to each of the top springs. The top spring mounting member includes a vertical piezoelectric element mounting surface to which the piezoelectric element is mounted and a top spring mounting surface to which the top spring is mounted and inclined at a predetermined angle with respect to the horizontal. The piezoelectric drive type part feeder according to claim 1, wherein The top spring mounting member includes a vertical piezoelectric element mounting surface to which the piezoelectric element is mounted, a first top spring mounting surface inclined at a predetermined angle with respect to the horizontal, and the first top spring mounting surface. 3. The piezoelectric driven part according to claim 2, further comprising a second top spring mounting surface that is inclined in the direction opposite to the vertical direction and inclined at a predetermined angle with respect to the horizontal direction. feeder. 5. The piezoelectric driven parts feeder according to claim 4, wherein an inclination angle of the first top spring attachment surface is different from an inclination angle of the second top spring attachment surface. 2. The piezoelectric drive type parts feeder according to claim 1, wherein one piezoelectric element is attached to a support member to which the piezoelectric element is attached. In a piezoelectric drive type part feeder comprising a top plate that transmits vibration to a work to be conveyed, a vibration member assembly that vibrates the top plate and has a piezoelectric element, and a base plate to which the vibration member assembly is attached, the vibration member assembly includes: A piezoelectric element standing upright from the base plate at a predetermined angle with respect to the horizontal, a top spring mounting member attached to one end of the piezoelectric element, and the same angle as the piezoelectric element using the top spring mounting member And a first top spring attached to the piezoelectric element, and the first top spring via the top spring attaching member is inclined opposite to the first top spring and forms a predetermined angle with respect to the horizontal. A second top spring and attached to each of the first and second top springs The piezoelectric-driven part feeder, characterized in that for conveying the conveyed workpieces respectively in the opposite direction through the top plate that is. The top spring mounting member includes the first top spring mounting surface to which the piezoelectric element and the first top spring are mounted, and which is inclined at a predetermined angle with respect to the horizontal in the mounted state. 8. The piezoelectric device according to claim 7, further comprising a second top spring mounting surface that is inclined opposite to the vertical direction with respect to the top spring mounting surface and is inclined at a predetermined angle with respect to the horizontal. Drive type parts feeder. 9. The piezoelectric drive type parts feeder according to claim 8, wherein the piezoelectric element and the first top spring are screwed to the first top spring mounting surface by joint fastening.

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